OKLAHOMA CITY: Oklahoma: Oklahoma has five U.S. House seats on the ballot in 2012. Only four of the five incumbents ran for re-election. Incumbent Dan Boren (D), who represented the 2nd Congressional District, declined to seek a 5th term in this year's election. Of the other four, the only incumbent who did not face a primary challenge was James Lankford (R) of the 5th District. With 70% of major party primaries contested, Oklahoma was well above the national average is 54.31%, ranking 12th in the nation for primary competitiveness in 2012.

The most hotly contested congressional race in Oklahoma this year is for the open 2nd District seat. Six Republicans and three Democrats competed in the June 26th primary for the chance to fill incumbent Boren's seat, which he will vacate in January. Runoff elections were held for both tickets, as no candidate received enough of the vote to be declared the winner in June. On August 28th, Democrat Rob Wallace and Republican Markwayne Mullin prevailed as their their respective party's nominee.[2][3]

Although retiring incumbent Boren is a Democrat, projections indicate the district will switch this year from blue to red. Before the primary, The Cook Political Report[4] and the Sabato Crystall Ball rated the race as "leaning Republican"[5], but the former publication changed its rating to "Likely Republican" later in the election season (Sabato held steady at Leaning Republican).[6][7]

The Center for Voting and Democracy (Fairvote) projects that Democrats will win zero districts while Republicans will win all five seats.[8]